For shunt controllers, adequate ventilation is necessary for heat dissipation. Through these regulations, the overcharging can be prevented for batteries. Once the batteries are fully charged, they are alienated from the PV arrays by the shunt controller, and the surplus power is converted into heat, and then the heat is dissipated through the heat sinks of the shunt controllers. Shunt controllers monitor the maximum point of battery charging. There are various types of charge controllers, including shunt controls, single-stage controls, multistage controls, etc. Most batteries can hardly recover after overcharging and over-discharging, so the employment of controllers in BIPV systems can prolong the service life of the batteries. They can also protect the appliances that are connected to the batteries in BIPV systems. Ruzhu Wang, in Handbook of Energy Efficiency in Buildings, 2019 3.2.4 Charge ControllersĬharge controllers are crucial in BIPV systems to prevent batteries from being damaged by overcharging and over-discharging by controlling the current flow from and to the batteries. High Efficiency Plants and Building Integrated Renewable Energy Systems
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